Saw-frame



(No Model.)

B. GHAQUETTE. SAW FRAME.-

Patented Dec. 12, 1893.

.Ilfil.

NITE TATES' ATENT f FFICEO EPI-IRAIEM CI-IAQUETTE, OF BRIDGEPORT,CONNECTICUT.

SAW-FRAM E.

SPECIFICATION forming part of Letters Patent No. 510,774, dated December12, 1893.

Aoplloationfiled September 16, 1893- Serial No. 485,704- (No model.)

To all whom it may concern.-

Be it known that I, EPHRAIEM CHAQUETTE, a c1t1zen of the United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inSaw-Frames 5 and I do hereby declare the following to be a full, clear,and exact description of the invent1on,such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to certain novel and useful lmprovements in sawframes, but more partlcularly to frames of the class used for holdingand operating hack-saw and fret-saw blades.

The object of my invention is to providea saw-frame capable oflongitudinal adj ustment, so that it may be used with different lengthsof blades, inwhich frame the adj ustment may be very quickly and readilyefiected, and which at the same time shall be exceedingly strong andrigid. In tools of this class the cost of manufacture is of the most vtal lmportance, and I have particularly anned to provide asaw-framehavingthe foregoing characteristics, which maybe produced and sold atthe lowest possible price.

W1th the ends hereinbefore set forth in view, my mvention consistsin theconstruction and combination of elements hereinafter to be fully and indetail explained and then recited in the claims, and particularly in thecombi-' nation of the two sections of the bow, each hav ng a laterallyextending loop upon its end through which the body of the other sectionpasses, and means for securing the sections together.

In order that those skilled in the art to which my invention appertainsmay fully understand its construction and method of operatlon, I willdescribe the same in detail, reference being had to the accompanyngdrawings which form a part of this specification, and in which- Figure 1is a side elevation; Fig. 2 a detail edge view looking from the top ofFig. 1; Fig. 3 a detail side elevation opposite to Fig. 1; Fig. 4,another detail side elevation showing a modified construction.

' The back or bowed portion of my saw frame straining screw 3 fortautening the saw blade,

and the outer end of the part 2 is furnished with any suitable handle.

a loop 5 which is turned outward at right angles to said part, so that,when assembled, each loop will closely embrace the body of the otherpart of the bow and form a bearing therefor, as will be readilyunderstood from an inspection of Figs. 1 and 2. The section of the framemarked 2 is provided with a number of holes or sockets 6 adapted toreceive a locking stud 7 which is mounted upon the other portion of theframe and is preferably held in locked position by means of a spring 8,but it is obvious that a set screw or other similar fastening might besubstituted for this spring-actuated stud and still the same result beobtained.

In Fig. 4 I show a slightly modified construction, in which the twosections of the bow, instead of having the loops formed upon them, asshown in the preceding figures, are provided with outwardly ,extendingears 9 which, in the assemblage of the parts, are bent over to formbearings which operate substantially the same way as the loops, but thisconstruction is inferior in strength and rigidity to the other and wouldbe employed only for very cheap fret-saw frames.

I am aware that extensible frames of this character are not broadly new,and that a frame having functions analogous to those of the frame shownand described in this application is to be found in Letters Patent to W.C. Marston, No. 440,174, dated the 11th day of November, 1890. I do notwish to be understood as laying claim to anything found in this patent,but only to the peculiarities of my improved frame.

The inner ends of the parts 1 and 2 are provided each with formed atthis time. The two strips are then assembled by passing each of themthrough the loops of the other, and afterward the outer ends are turnedor bent down so that the two parts form the adjustable bow or back whichthe drawings show. The other necessary parts may then be attached.

The saw-frame thus formed is obviously very cheap in its construction,but at the same time it possesses greatstrength and durability, Inchanging it for the accommodation of saws of difierent lengths, the studis lifted out of the socket, the two sections adjusted by sliding thetwo parts one upon the other until the frame is of the proper length andthen reseating the stud.

What I claim, and desire to secure by Letters Patent, is

1. In an adjustable hack-saw frame, the bow consisting of the twooverlapping sections each provided with a laterally projecting loop oreye encircling and forming a beariug for the other section, and alocking device mounted upon one of the sections and engaging the othersection, substantially as shown and described.

2. In a hacksaw frame, the bow consisting of the overlapping sections 1and 2, each provided with a laterally extended loop through which theother section passes, in combination with a spring-actuated lockingdevice mounted upon one of the sections, and suitable sockets formed .inthe other section for the reception of said locking device,substantiallyas and for the purpose specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EPI'IRAIEM CHAQUETTE.

\Vitnesses:

PAUL W. STEVENS, GEO. S. KNOPP.

